Today I was doing some spirited driving with a friend, and the car sureged, or more like the car "shaked".

I suspect it could be the IC PUMP that could be the problem, as it happens when you take your foot of the accelerator after accelerating hard (using some higher RPM then what i do driving normally). Could it be a sign of the IC pump going bad?

First it was working fine, but after a long hard acceleration to around 120mph, then hit the brake, accelerated again, foot slight of accelerator to do some cruising, the surge started... then again at higher RPM during the drive, it feels like it "surges" when the supercharger engages/disengages after the spirited driving. Normal "easy" driving no problem....even with occasional pedal to the metal, this happens after some more excessive driving at high speed, not every time but occasionally. Need some suggestions on how to solve the issue or could a replacement IC pump solve the issue (cooling problem?)

The car has done 8000 miles

Thanks!